101120001221 has 8 divisors (see below), whose sum is σ = 102262691160. Its totient is φ = 99977456128.

The previous prime is 101120001217. The next prime is 101120001233. The reversal of 101120001221 is 122100021101.

It can be written as a sum of positive squares in 4 ways, for example, as 35832597025 + 65287404196 = 189295^2 + 255514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101120001221 - 2² = 101120001217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101120003221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2027435 + ... + 2076711.

It is an arithmetic number, because the mean of its divisors is an integer number (12782836395).

Almost surely, 2^101120001221 is an apocalyptic number.

It is an amenable number.

101120001221 is a deficient number, since it is larger than the sum of its proper divisors (1142689939).

101120001221 is an equidigital number, since it uses as much as digits as its factorization.

101120001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72423.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101120001221 its reverse (122100021101), we get a palindrome (223220022322).

The spelling of 101120001221 in words is "one hundred one billion, one hundred twenty million, one thousand, two hundred twenty-one".